EnergyCell OPzV
Batteries
User’s Manual
About OutBack Power Technologies
OutBack Power Technologies is a leader in advanced energy conversion technology. Our products include true sine
wave inverters/chargers, maximum power point tracking charge controllers, and system communication components,
as well as circuit breakers, accessories, and assembled systems.
Contact Information
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(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER
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WILL BE ENTIRELY AT THE USER’S RISK.
Notice of Copyright
EnergyCell OPzV User’s Manual © August 2015 by OutBack Power Technologies. All Rights Reserved.
Trademark
OutBack Power and the OutBack Power logo are trademarks owned and used by OutBack Power Technologies, Inc.
The ALPHA logo and phrase “member of the Alpha Group” are trademarks owned and used by Alpha Technologies Inc.
These trademarks may be registered in the United States and other countries.
Date and Revision
August 2015, Revision A
Part Number
181-411-B0-001, Rev. A (08/2015)
Corporate Headquarters
17825 - 59th Avenue N.E.
Suite B
Arlington, WA 98223 USA
+1.360.435.6030
+1.360.618.4363 (Technical Support)
+1.360.435.6019 (Fax)
Support@outbackpower.com
http://www.outbackpower.com
Address:
Telephone:
Email:
Website:
European Oce
Hansastrasse 8
D-91126
Schwabach, Germany
+49.9122.79889.0
+49.9122.79889.21 (Fax)
Table of Contents
Important Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Additional Resources. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Delivery and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Receiving Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unpacking and Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Room and Installation Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Racks and Mechanical Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Cells in Parallel Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Preliminary Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Commissioning Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Full Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Equalizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Normal Operation Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Discharging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Overdischarge Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Low-voltage Reconnect for Stand-Alone Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Temperature Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Current Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Ripple Currents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Battery Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Taking Out of Operation / Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Performance Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Technical Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Tables
Table 1, Case 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 2, Case 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 3, Case 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Table 4, Battery State Deviation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Table 5, Settings for Stand-Alone Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Table 6, Functional Equalizing Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Table 7, Minimum Safe Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Table 8, Performance Data - Discharge Constant Current at 20°C (Amperes) . . . . . . . . . . . . . . . . . . . . .20
Table 8, Performance Data - Discharge Constant Current at 20°C (Amperes), Continued . . . . . . . . . . . . .21
Table 9, Performance Data - Discharge Constant Power at 20°C (Watts/cell) . . . . . . . . . . . . . . . . . . . . .22
Table 9, Performance Data - Discharge Constant Power at 20°C (Watts/cell), Continued. . . . . . . . . . . . . .23
Figures
Figure 1, Expected Number of Cycles vs Depth of Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Figure 2, Guidance for the Initial Low-Voltage Disconnect Settings (25°C Reference Temperature) . . . . . .17
Figure 3, Self-Discharge Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Figure 4, EnergyCell OPzV Cycle Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Figure 5, EnergyCell OPzV Capacity vs. Temperature Chart (Rate = 120Hr/1.85VPC) . . . . . . . . . . . . . . . .19
Important Safety Information
181-411-B0-001, Rev. A (08/2015)
5
Important Safety Instructions
READ AND SAVE THESE INSTRUCTIONS!
This manual contains important safety instructions for the EnergyCell OPzV battery. These instructions are in addition to the safety
instructions published for use with all OutBack products. Read all instructions and cautionary markings on the EnergyCell OPzV
battery and on any accessories or additional equipment included in the installation. Failure to follow these instructions could
result in severe shock or possible electrocution. Use extreme caution at all times to prevent accidents.
Additional Resources
These references may be used when installing this equipment. Depending on the nature of the installation, it may be highly
recommended to consult these resources.
Institute of Electrical and Electronics Engineers (IEEE) guidelines: IEEE 450, IEEE 484, IEEE 1184, IEEE 1187, IEEE 1188, IEEE 1189,
IEEE 1491, IEEE 1578, IEEE 1635, and IEEE 1657 (various guidelines for design, installation, maintenance, monitoring, and safety of
battery systems)
» Some batteries can weigh in excess of 100lb (45kg). Use safe lifting techniques
when lifting this equipment as prescribed by the Occupational Safety and
Health Association (OSHA) or other local codes. Lifting machinery may be
recommended as necessary.
» Wear appropriate protective equipment when working with batteries, including
eye or face protection, acid-resistant gloves, an apron, and other items.
» Wash hands after any contact with the lead terminals or battery electrolyte.
» Ensure clearance requirements are strictly enforced around the batteries.
» Ensure the area around the batteries is well ventilated and clean of debris.
» Never smoke or allow a spark or ame near the batteries.
» Always use insulated tools. Avoid dropping tools onto batteries or other
electrical parts.
» Keep plenty of fresh water and soap nearby in case battery acid contacts skin,
clothing, or eyes.
» Wear complete eye and clothing protection when working with batteries.
Avoid touching bare skin or eyes while working near batteries.
» If battery acid contacts skin or clothing, wash immediately with soap and
water. If acid enters the eye, immediately ood it with running cold water for
at least 20 minutes and get medical attention as soon as possible.
» Never charge a frozen battery.
» Insulate batteries as appropriate against freezing temperatures. A discharged
battery will freeze more easily than a charged one.
» If a battery must be removed, always remove the grounded terminal from the
battery rst. Make sure all devices are de-energized or disconnected to avoid
causing a spark.
» Do not perform any servicing other than that specied in the installation
instructions unless qualied to do so.
WARNING: Personal Injury
WARNING: Explosion, Electrocution, or Fire Hazard
Delivery and Storage
6
181-411-B0-001, Rev. A (08/2015)
Delivery and Storage
Receiving Inspection
Inspect the shipment for missing components. Verify the contents with the packaging documents. Inspect each package or pallet
for integrity and electrolyte leakage. Record the receipt date and the inspection results, and notify OutBack Power of any damage.
Take photographs if necessary.
Storage
» Store the batteries in a dry, clean, cool, and well ventilated location. Do not expose the cells to direct sunlight as damage
to the container and cover may occur.
» Do not stack one pallet above the other. Avoid storing unpacked cells / monoblocs on sharp-edged supports.
» Storage on a pallet wrapped in plastic material is permitted except in rooms where the temperature uctuates
signicantly, or if high relative humidity can cause condensation under the plastic cover. With time, this condensation can
cause a whitish hydration on the poles and lead to high self-discharge by leakage current.
» Protect the batteries from any risk of electric shock resulting from short-circuiting by a conductive object or from a
building up of conductive dust.
» It is recommended to have the same storage conditions within a batch, pallet or room.
» As the batteries are supplied charged, storage time is limited. In order to easily charge the batteries after prolonged
storage, it is advised not to store them more than 6 months at 20°C, 4 months at 30°C, 2 months at 40°C. A refreshing
charge is needed after this period. Failure to observe these conditions may result in signicantly reduced capacity and
service life.
» Record dates and conditions for all charges during storage.
Unpacking and Handling
» Never lift cells by the terminal posts. Lifting cells with weight above 25kg has to be made with lifting belts. Never drag or
roll the battery.
» Do not apply force to the safety valve during handling.
» The batteries are fully charged before shipment. Do not short-circuit the batteries.
» Check for evidence of leakage. All cells with visible defects such as cracked jars, loose terminal posts, or other
unrecoverable problems shall be rejected.
Installation
7
181-411-B0-001, Rev. A (08/2015)
Installation
Room and Installation Design
» The battery should be installed in a clean, dry environment. Avoid placing the battery in a warm place or in direct
sunlight. The location or arrangement of cells should result in no greater than a 3°C temperature dierential between cells
within a series-connected string at a given time. Avoid conditions that result in spot heating or cooling, as temperature
variations will cause the battery to become electrically unbalanced.
» Ensure the installation allows adequate air ow around each cell or monobloc for better cooling. Keep 10mm distance
between cells or blocks.
» The layout of the room must allow easy access to the batteries.
» Provide adequate space and illumination for inspection, maintenance, testing, and cell/battery replacement. Space
should also be provided to allow for operation of lifting equipment and proper measurement (cell voltage and
temperature).
Racks and Mechanical Stability
EnergyCell OPzV battery racking is recommended for proper installation. Calculations should be made to ensure that oor loading
capabilities are not exceeded. Seismic forces must be considered when applicable. The installation should provide adequate
structural support and be as free of vibration as possible.
Cells in Parallel Strings
Valve-regulated cells may be connected in parallel to give higher current capability. In the case of parallel connected strings,
use batteries of the same capacity, design and age only with a maximum of 4 parallel strings. If more than 4 strings are required,
consult a technical support representative at OutBack Power. The resistance of the cables in each string must be the same. In
addition, each string should be equipped with disconnect capabilities for maintenance and safety purposes.
Preliminary Inspection
1. Check for evidence of leakage. All cells with visible defects such as cracked jars, loose terminal posts, or other
unrecoverable problems should be rejected.
2. Before installation, if the surface of the battery container is dirty, wash the container with soapy water.
3. Conduct Open Circuit Voltage (OCV) measurements on each individual cell or monobloc battery to verify their
compliance with the following variation and absolute voltage criteria:
» The OCV must not deviate from average more than ±0.025V for 2V cells.
» The OCV must not be lower than 2.05V for 2V cells.
4. Consult a technical support representative at OutBack Power if the battery compliance cannot be veried.
All aspects of the installation must be in accordance with the applicable rules and
governmental regulations of the local area.
i
Important:
Installation
8
181-411-B0-001, Rev. A (08/2015)
Electrical Connections
1. Ensure that the cells are wired with the correct polarity.
2. Verify that all contact surfaces are clean. If required, clean with a brass brush/pad. The inserts and connections can be
lightly lubricated with silicone grease.
3. Torque the terminal screws to 22Nm.
4. Electrical connections to the battery, as well as between cells on separate levels or racks, should be made to minimize
mechanical strain on battery terminal posts.
5. Check the battery’s total voltage. It should match the number of cells / monoblocs connected in series. If the
measurement is not as expected, recheck the connections for proper polarity. Batteries with a nominal voltage > 75V
require an EC conformity declaration in accordance with the low voltage directive (73/23/EEC), which conrms that the
CE marking is applied to the battery. The company installing the battery is responsible for the declaration and applying
the CE marking.
6. For future identication, apply individual cell/unit numbers in sequence starting from one end of the battery. Also apply
identication numbers for the parallel strings.
7. Connect the battery to the DC power supply, with the charger switched o, battery fuses removed and the load
disconnected, ensuring that the polarity is correct.
Instrumentation
For large installations, consider permanent instrumentation for measurements and alarm. These include voltmeter, amp-meter,
Ah counter, high and low voltage indicators, ground fault detector(s) and temperature sensor(s) for the battery and the ambient
air. For smaller installations use portable test equipment. The temperature sensors must be xed on the battery units (side wall or
negative pole).
For systems where the total battery voltage is measured at the controller, use oversized
cables to the battery in order to minimize the voltage drop.
Note:
Operation
9
181-411-B0-001, Rev. A (08/2015)
Operation
Charging
Commissioning Charge
The initial charge is critical to future battery operation and the battery’s service life. It is performed as a full charge (described in
the next section). Keep the records in the battery’s logbook.
Full Charge
The full charge is a prolonged charge at elevated voltage, performed under the supervision of the user. It lasts until certain full
charge criteria are fullled but not outside certain minimum and maximum duration limits. It is used mainly as a commissioning
charge after installation, a corrective equalizing charge, a preparation charge before a capacity test, or a refresh charge during
long storage period
During charge, the battery temperature must be continuously monitored. If the battery temperature exceeds 45°C, the charge will
be interrupted until the battery cools down.
Case 1) With external charger of IU - characteristic. For the commissioning charge the current must be limited to 1*I10 Amps.
Table 1, Case 1
Case 2) With external charger of IUI or I - characteristic. Using an IUI or I charger that can charge the battery with constant current
at elevated voltage, higher than 2.60Vpc up to 2.80Vpc.
Table 2, Case 2
Battery Temperature Voltage Settings
Minimum and Maximum
Charging Times
Full Charge Criteria
0 - 10°C 2.38 - 2.45V 48 - 72h
When the individual cell
voltages have not risen
for a period of 4 hours
15 - 30°C 2.35 - 2.40V 36 - 72h
30 - 40°C 2.32 - 2.35V 24 - 48h
Bulk Charge Current
Limitation
Voltage Settings for
U-Phase
Gassing Charge Current
Limitation
Minimum and Maximum
Charging Times at
Gassing Phase
Full Charge Criteria
2.0*I10 2.33 - 2.40V
0.12*I10 (1.2A per 100Ah
Nominal Capacity)
5 - 8h
When the individual
cell voltages have not
risen for a period of 1
hour
Operation
10
181-411-B0-001, Rev. A (08/2015)
Case 3) Using the solar controller. Connect the battery to the controller and leave it for 1-2 weeks while the application load is
disconnected. Full charge criteria are not applicable here. Use the following voltage settings:
Table 3, Case 3
Equalizing
Functional Equalizing
During a cycling operation, the target is to achieve an almost complete recharge (100% state of charge) after every discharge
cycle, otherwise a permanent capacity decrease will threaten the battery’s service life. This is not always possible in stand-alone
applications where the RES source depends on the weather conditions. A scheduled (functional) equalizing charge should be
given at regular intervals to protect the battery from sulphation and lagging cells.
» Equalizing frequency is adjusted according to the charge decit. The less complete the daily recharge is, the more
frequent the equalizing is required.
» The charge duration is xed.
» The voltage settings are the same values used for a normal recharge.
Corrective Equalizing
Equalizing charges are also required after incidents of excessive stress for the battery (deep discharges with inadequate charges)
or when the individual cell or bloc voltages show excessive deviation from the average (lagging cells and sulphation problems).
Should the voltage in individual cells/bloc deviate from the average value more than the following limits, perform an equalizing
charge:
Table 4, Battery State Deviation
Corrective Equalizing is performed as a Full Charge
If the voltages are still out of the limits, contact an OutBack Power technical support representative.
Battery State 2V Cells
Floating, after the rst 6 months of operations -0.1V / +0.2V
At end of normal charge, while the current is
stable, after the rst 6 months of operation
-0.2V / +0.35V
During discharge, while Depth-of-Discharge
is between 5 and 20%
±0.04V
During discharge, while Depth-of-Discharge
is between 20 and 60%
±0.06V
At rest, 24h after a functional equalizing
charge
±0.025V
On-O Controllers -20 - 0°C 0 - 35°C >35°C
High Disconnect Voltage (Vr) 2.55V 2.45V 2.40V
Low Restart Voltage (Vrr) 2.35V 2.30V 2.25V
Constant Voltage Controllers -20 to 0°C 0 - 35°C >35°C
Regulation Voltage (Vr) 2.45V 2.37V 2.33V
Operation
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181-411-B0-001, Rev. A (08/2015)
Normal Operation Charging
The following charging voltage settings are optimum values, so the battery is not heavily undercharged or overcharged. A good
indicator to check this, is the percent of overcharge per cycle (charging factor) within a long period of operation (a month to a
year). Deviations from these charging factors signals the user to check the charging settings and the overall system operation:
» >107% for Stand-alone systems with maximum daily depth-of-discharge less than 5%
» 105% to 110% for Stand-alone systems with maximum daily depth-of-discharge more than 5%
Settings for Stand-Alone Systems
The settings shall be adjusted according to battery temperature. Temperatures are averaged over one month:
Table 5, Settings for Stand-Alone Systems
For systems with oversized PV array and low maximum daily depth-of-discharge (<5%), use lower settings. Functional equalizing
charges are required in periods with marginal “Array to Load ratio” (less than 1.3). Typical frequency is 1 to 6 times per year.
Table 6, Functional Equalizing Frequency
A functional equalizing lasts 24 hours with voltage settings the same as above.
Controller Type Setting -20 - 0°C 0 - 15°C 15 - 35°C >35°C
Constant Voltage
One Step
Vr 2.50V 2.45V 2.40V 2.35V
Constant Voltage
Two Steps
Absorption Maximum
2h per Day
2.55V 2.50V 2.45V 2.40V
Float 2.45V 2.40V 2.35V 2.30V
On - O
High Voltage (Vr) 2.55V 2.50V 2.45V 2.40V
Low Voltage (Vrr) 2.35V 2.30V 2.30V 2.25V
Absorption Time 4 - 6h 6 - 8h 8 - 10h 10 - 12h
Equalizing Every 7 Cycles 14 Cycles 21 Cycles 28 Cycles
If One Cycle = One Day One Week Two Weeks Three Weeks Four Weeks
Operation
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181-411-B0-001, Rev. A (08/2015)
Discharging
No restriction on the discharge current is required, provided the connections are properly sized and the battery temperature stays
within the allowable limits.
For discharge rates lower than I10, the maximum daily depth-of-discharge is expressed as a percentage of the C10 DIN value.
The maximum allowable depth-of-discharge (MDOD) is 80% of the maximum available capacity, for all systems unless otherwise
approved by OutBack Power.
Overdischarge Protection
The MDOD limit control should not be implemented solely through control systems based on Ah-counters. Monitoring the battery
voltage against the low-voltage disconnect setting should always be included. The maximum daily depth-of-discharge limit
control - for hybrid applications - can be measured either by Ah-counters control units or/and by battery voltage monitoring.
The graphs at the end of this manual give the battery voltage to depth-of-discharge relation as a guidance for the initial low
voltage disconnect settings (rst-try settings). The system designer or installer must adjust and conrm them according to the
actual conditions of the system. For systems where the voltage is measured at the controller and not on the battery, the voltage
drop on the connections to the battery must be considered.
For critical systems with the load directly connected on the battery, an alarm or other method of user feedback must be included
to give information on the battery status when depth-of-discharge exceeds 60 to 80%.
Low-voltage Reconnect for Stand-Alone Systems
The battery voltage at which the load is reconnected after a low-voltage disconnect must be above 2.2 Vpc.
Operation
13
181-411-B0-001, Rev. A (08/2015)
Temperature Limits
All technical data applies to the nominal temperature of 25°C. The ideal operating temperature range is 25°C ± 5°K. The
recommended operating temperature range is 15°C to 35°C. Higher temperatures reduce the working life. A maximum
temperature of 45°C must not be exceeded. In hybrid applications, the yearly average of battery temperature should be less than
30°C. Subzero temperatures may cause electrolyte freezing and irreversible damage when the battery’s state of charge is low. The
minimum safe temperature versus state of charge is given below:
Table 7, Minimum Safe Temperature
The system designer/installer should consider countermeasures like thermal insulation, increasing the battery capacity, or
increasing the minimum system voltage. In stand-alone systems, it is recommended to use controllers with adjustable low voltage
disconnect setting to the battery temperature (higher low voltage disconnect for lower temperature).
During operation the temperature dierence between individual cells/blocks battery should be below 3°C.
Current Limits
The maximum charging current during the bulk charging is 3*I10, while the battery voltage is below the gassing voltage of 2.40V
x number of cells.
Ripple Currents
During recharging up to 2.40 V/cell, the eective value of the AC ripple current may temporarily reach maximum 10A/100 Ah C10
nominal capacity. After recharging and at oat charge in stand-by operation or buer operation, the eective value of the AC
ripple current must not exceed 5A /100 Ah C10 nominal capacity.
SoC (% to C10 - DIN value) 0 - 20% 20 - 40% 40 - 60% 60 - 80%
Freezing Point -40°C -30°C -20°C -15°C
Battery Maintenance
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181-411-B0-001, Rev. A (08/2015)
Battery Maintenance
To avoid leakage currents and the associated risk of re, keep the battery dry and clean. Clean with clear water; do not use any
solvents or detergents as they can cause permanent damage to the container and lid. Avoid electrostatic charges.
Measure and record the following parameters every 6 months:
» Battery voltage
» Voltage of some cells/bloc batteries (pilot cells)
» Temperature of the container in some cells/bloc batteries (pilot cells)
» Conrm daily depth-of-discharge per cell
» Conrm max depth-of-discharge per cell does not exceed the allowed limit
» Conrm charging factor is within acceptable limits
» Conrm that charge settings correspond to the recommended ones
» Check if corrective equalizing is applied
Measure and record the following parameters every 12 months:
» Voltages and temperatures in all cells/blocks
» Connectors, racks and the ventilation
Faults / Testing / Storage / Transport
15
181-411-B0-001, Rev. A (08/2015)
Faults
Should faults be detected in the battery or the charging device, contact an OutBack Power technical support representative.
Measured data will simplify fault detection and elimination. A service contract with OutBack Power will detect faults in time.
Testing
Tests must be conducted according to IEC 60896-21. Check that the battery is fully charged. Before testing new batteries it must
be ensured that a sucient commissioning charge has been applied and the battery is fully charged.
Taking Out of Operation / Storage
If lled lead acid accumulators are to be taken out of operation for a longer period of time, they must be placed fully charged in a
dry, frost-free room. To avoid damage, periodical equalizing charging or permanent oat charging must be conducted.
Transport
EnergyCell OPzV cells/monoblocks are protected against short-circuiting. If properly packed, batteries are not dangerous goods
according to the international regulations for dangerous goods on road and on rail (ADR and RID).
Performance Curves
16
181-411-B0-001, Rev. A (08/2015)
Performance Curves
Figure 1, Expected Number of Cycles vs Depth of Discharge
DoD %
Number of Cycles
0% 10% 20% 30% 40% 50% 60% 70% 80%
8000
7000
6000
5000
4000
3000
2000
1000
0
RES OPzV 2V Cells
20
o
C
25
o
C
30
o
C
35
o
C
40
o
C
45
o
C
Performance Curves
17
181-411-B0-001, Rev. A (08/2015)
Figure 2, Guidance for the Initial Low-Voltage Disconnect Settings (25°C Reference Temperature)
» The minimum voltage, for standby use, represents the maximum available
capacity.
» The minimum voltage, for solar use, represents 80% of the maximum available
capacity. It is the lower low voltage disconnect setting except in special
applications and after OutBack Power’s approval.
» The depth of discharge 60% line, represents the minimum voltage setting to
control the end of each discharge voltage in hybrid applications. It’s always
recommended to implement a supplementary control by Ah counter.
Note:
RES OPzV 2V Cells
0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Battery Voltage (Vpc)
2.10
2.05
2.00
1.95
1.90
1.85
1.80
1.75
Extracted Amperhours per 100Ah of C10 DIN
DoD20%
DoD30%
DoD40%
DoD50%
DoD60%
DoD70%
DoD80%
DoD90%
DoD100%
Minimum for Solar Use
Rates in Amps per
100AhC10DIN
Minimum for Standby Use
The Battery Cannot
Operate Here
Restricted Use
Restricted Use
Performance Curves
18
181-411-B0-001, Rev. A (08/2015)
Figure 3, Self-Discharge Characteristics
Residual capacity (%)
Storage time (months)
0 5 10 15 20 25
120%
100%
80%
60%
40%
20%
RES OPzV Cells
10
o
C
20
o
C
30
o
C
40
o
C
Performance Curves
19
181-411-B0-001, Rev. A (08/2015)
Figure 4, EnergyCell OPzV Cycle Life
Figure 5, EnergyCell OPzV Capacity vs. Temperature Chart (Rate = 120Hr/1.85VPC)
-10
-5
0
5
25
30
35
40
201510
110%
105%
100%
95%
90%
85%
80%
Temperature (°C)
Available Capacity (% @ 25°C)
Number of Cycles
8000
7000
6000
5000
4000
3000
2000
1000
0
10
20
30
40
50
60
70
80
Depth of Discharge (%)
Technical Specications
20
181-411-B0-001, Rev. A (08/2015)
Technical Specications
Table 8, Performance Data - Discharge Constant Current at 20°C (Amperes)
Performance Data - Discharge Constant Current at 20°C (Amperes)
End Voltage 2.00V/cell
10h 12h 20h 24h 48h 50h 72h 100h 120h 168h 240h
EnergyCell
OPzV 450
14.73 12.98 8.99 7.86 4.59 4.45 3.30 2.51 2.12 1.55 1.10
EnergyCell
OPzV 750
22.92 20.37 14.42 12.69 7.61 7.38 5.53 4.25 3.61 2.68 1.93
EnergyCell
OPzV 2000
55.71 49.80 35.82 31.69 19.37 18.77 14.21 10.91 9.37 6.99 5.13
EnergyCell
OPzV 3000
87.52 77.93 55.41 48.83 29.37 28.46 21.37 16.29 13.90 10.24 7.23
End Voltage 1.92V/cell
10h 12h 20h 24h 48h 50h 72h 100h 120h 168h 240h
EnergyCell
OPzV 450
25.17 21.86 14.54 12.52 6.99 6.75 4.92 3.67 3.11 2.29 1.63
EnergyCell
OPzV 750
41.02 35.80 24.10 20.84 11.81 11.41 8.37 6.29 5.35 3.95 2.85
EnergyCell
OPzV 2000
98.74 86.50 58.80 51.02 29.27 28.30 20.90 15.79 13.48 9.99 7.20
EnergyCell
OPzV 3000
155.28 135.59 91.31 78.96 44.70 43.19 31.66 23.77 20.22 14.91 10.71
End Voltage 1.90V/cell
10h 12h 20h 24h 48h 50h 72h 100h 120h 168h 240h
EnergyCell
OPzV 450
27.17 23.55 15.59 13.40 7.44 7.18 5.22 3.89 3.29 2.41 1.72
EnergyCell
OPzV 750
44.62 38.85 25.99 22.42 12.60 12.17 8.90 6.67 5.67 4.18 3.00
EnergyCell
OPzV 2000
107.56 93.95 63.37 54.84 31.17 30.12 22.16 16.69 14.22 10.52 7.57
EnergyCell
OPzV 3000
169.03 147.19 98.41 84.88 47.63 46.00 33.59 25.15 21.36 15.72 11.26
End Voltage 1.85V/cell
10h 12h 20h 24h 48h 50h 72h 100h 120h 168h 240h
EnergyCell
OPzV 450
31.09 26.87 17.64 15.13 8.31 8.01 5.79 4.29 3.63 2.65 1.88
EnergyCell
OPzV 750
51.82 44.93 29.74 25.57 14.18 13.69 9.94 7.40 6.27 4.60 3.29
EnergyCell
OPzV 2000
125.49 109.02 72.54 62.49 34.94 33.74 24.61 18.42 15.64 11.50 8.23
EnergyCell
OPzV 3000
196.84 170.58 112.62 96.73 53.43 51.56 37.37 27.80 23.53 17.23 12.29
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